题目内容

怎样算简便就怎样算.
(1)9×
5
18
+
13
18
×9
(2)
5
3
-
5
9
×
3
2
-
1
6
(3)
1
8
÷[
1
25
×(
2
5
+
1
10
)]
(4)(
5
8
+
1
27
)×8+
19
27
(1)9×
5
18
+
13
18
×9,
=(
5
18
+
13
18
)×9,
=1×9,
=9;

(2)
5
3
-
5
9
×
3
2
-
1
6

=
5
3
-
5
6
-
1
6

=
5
3
-(
5
6
+
1
6
),
=
5
3
-1,
=
2
3


(3)
1
8
÷[
1
25
×(
2
5
+
1
10
)],
=
1
8
÷[
1
25
×
1
2
],
=
1
8
÷
1
50

=
25
4


(4)(
5
8
+
1
27
)×8+
19
27

=
5
8
×8+
1
27
×8+
19
27

=5+
8
27
+
19
27

=5+(
8
27
+
19
27
),
=5+1,
=6.
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